a light bulb goes off in (one's) head

(redirected from light bulb go off)

a light bulb goes off in (one's) head

One is suddenly struck with an ingenious or inspired idea, insight, or revelation. In this expression, the phrasal verb "go off" means "turn on" or "become active." We spent hours trying to come up with a solution, when suddenly a light bulb went off in my head. I kept feeding him subtle hints about the truth of the matter, waiting for a light bulb to go off in his head.
See also: bulb, goes, head, light, off
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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References in periodicals archive ?
Watson said he saw the light bulb go off after the Guardians let a late lead slip away and allow St.
In sum, the retailer that can make the theoretical light bulb go off for consumers will begin to see the light at the end of the profitless tunnel.
I can't tell you how many times I've seen a light bulb go off above their heads when they find that thing they love, that they want to do, when they can see their path to a great and exciting future.
For one design, the community was struggling with the tensioning system for the fingers; the engineers couldn't figure it out until a musician said, "On my guitar, there's these little peg things, and they pull the strings when I want it, and they loosen them when I don't." That made a light bulb go off for the engineers, and they took off with that.